/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:52:27,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:52:27,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:52:27,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:52:27,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:52:27,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:52:27,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:52:27,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:52:27,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:52:27,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:52:27,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:52:27,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:52:27,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:52:27,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:52:27,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:52:27,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:52:27,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:52:27,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:52:27,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:52:27,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:52:27,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:52:27,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:52:27,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:52:27,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:52:27,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:52:27,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:52:27,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:52:27,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:52:27,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:52:27,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:52:27,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:52:27,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:52:27,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:52:27,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:52:27,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:52:27,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:52:27,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:52:27,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:52:27,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:52:27,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:52:27,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:52:27,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 11:52:27,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:52:27,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:52:27,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:52:27,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:52:27,964 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:52:27,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:52:27,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:52:27,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:52:27,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:52:27,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:52:27,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:52:27,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:52:27,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:52:27,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:52:27,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:52:27,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:52:27,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:52:27,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:52:27,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:52:27,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:52:27,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:52:27,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:52:27,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:52:27,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:52:27,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:52:27,971 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:52:27,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:52:27,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 11:52:27,972 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:52:27,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:52:27,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:52:28,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:52:28,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:52:28,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:52:28,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:52:28,278 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:52:28,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-04-18 11:52:28,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8237f8d/64c42e2183e0486dae39f11f940b1c97/FLAG8a6b605c4 [2020-04-18 11:52:28,915 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:52:28,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-04-18 11:52:28,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8237f8d/64c42e2183e0486dae39f11f940b1c97/FLAG8a6b605c4 [2020-04-18 11:52:29,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8237f8d/64c42e2183e0486dae39f11f940b1c97 [2020-04-18 11:52:29,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:52:29,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:52:29,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:52:29,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:52:29,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:52:29,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:52:29" (1/1) ... [2020-04-18 11:52:29,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d973e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:29, skipping insertion in model container [2020-04-18 11:52:29,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:52:29" (1/1) ... [2020-04-18 11:52:29,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:52:29,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:52:29,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:52:29,879 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:52:29,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:52:30,035 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:52:30,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30 WrapperNode [2020-04-18 11:52:30,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:52:30,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:52:30,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:52:30,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:52:30,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:52:30,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:52:30,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:52:30,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:52:30,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... [2020-04-18 11:52:30,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:52:30,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:52:30,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:52:30,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:52:30,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:52:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 11:52:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-04-18 11:52:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-04-18 11:52:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 11:52:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 11:52:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:52:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:52:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:52:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:52:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:52:30,244 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:52:30,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:52:30,639 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-04-18 11:52:30,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:52:30 BoogieIcfgContainer [2020-04-18 11:52:30,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:52:30,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:52:30,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:52:30,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:52:30,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:52:29" (1/3) ... [2020-04-18 11:52:30,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3692d561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:52:30, skipping insertion in model container [2020-04-18 11:52:30,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:30" (2/3) ... [2020-04-18 11:52:30,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3692d561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:52:30, skipping insertion in model container [2020-04-18 11:52:30,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:52:30" (3/3) ... [2020-04-18 11:52:30,652 INFO L109 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-04-18 11:52:30,662 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:52:30,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:52:30,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 11:52:30,671 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:52:30,698 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,698 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,698 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,698 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,699 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,700 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,701 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,701 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,702 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,702 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,703 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,703 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,707 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,707 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,707 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,708 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,714 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,714 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,715 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,715 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:30,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 11:52:30,759 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:52:30,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:52:30,759 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:52:30,759 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:52:30,759 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:52:30,760 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:52:30,760 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:52:30,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:52:30,774 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions, 228 flow [2020-04-18 11:52:30,776 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-04-18 11:52:30,821 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-04-18 11:52:30,822 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 11:52:30,830 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-04-18 11:52:30,835 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-04-18 11:52:30,859 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-04-18 11:52:30,859 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 11:52:30,861 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-04-18 11:52:30,864 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3196 [2020-04-18 11:52:30,865 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 11:52:31,117 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-04-18 11:52:31,928 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-04-18 11:52:32,030 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11328 [2020-04-18 11:52:32,030 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2020-04-18 11:52:32,034 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 65 transitions, 152 flow [2020-04-18 11:52:32,090 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 797 states. [2020-04-18 11:52:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states. [2020-04-18 11:52:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 11:52:32,099 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:32,100 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 11:52:32,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash 13833324, now seen corresponding path program 1 times [2020-04-18 11:52:32,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:32,116 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [367879273] [2020-04-18 11:52:32,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:32,149 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 11:52:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 11:52:32,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 11:52:32,152 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:32,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:32,152 INFO L82 PathProgramCache]: Analyzing trace with hash 13833324, now seen corresponding path program 2 times [2020-04-18 11:52:32,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:32,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797202076] [2020-04-18 11:52:32,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:32,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797202076] [2020-04-18 11:52:32,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:32,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:52:32,325 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:32,325 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:32,326 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 11:52:32,326 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:32,329 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:52:32,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:52:32,336 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 2 states. [2020-04-18 11:52:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:32,340 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 11:52:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 11:52:32,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:32,343 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [367879273] [2020-04-18 11:52:32,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:32,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:52:32,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [367879273] [2020-04-18 11:52:32,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:52:32,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:32,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:52:32,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:52:32,353 INFO L87 Difference]: Start difference. First operand 797 states. Second operand 2 states. [2020-04-18 11:52:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:32,401 INFO L93 Difference]: Finished difference Result 797 states and 2314 transitions. [2020-04-18 11:52:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:52:32,403 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-04-18 11:52:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:32,438 INFO L225 Difference]: With dead ends: 797 [2020-04-18 11:52:32,439 INFO L226 Difference]: Without dead ends: 758 [2020-04-18 11:52:32,440 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:52:32,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-04-18 11:52:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2020-04-18 11:52:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-04-18 11:52:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2229 transitions. [2020-04-18 11:52:32,561 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2229 transitions. Word has length 4 [2020-04-18 11:52:32,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:32,561 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 2229 transitions. [2020-04-18 11:52:32,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:52:32,562 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2229 transitions. [2020-04-18 11:52:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:52:32,563 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:32,563 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:32,564 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:32,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1620095088, now seen corresponding path program 1 times [2020-04-18 11:52:32,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:32,565 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1410127484] [2020-04-18 11:52:32,566 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:32,566 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:52:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:52:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:52:32,567 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:32,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1620095088, now seen corresponding path program 2 times [2020-04-18 11:52:32,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:32,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956915577] [2020-04-18 11:52:32,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:32,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956915577] [2020-04-18 11:52:32,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:32,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:52:32,661 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:32,662 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:32,663 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:52:32,663 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:32,671 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:32,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:32,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:32,672 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 11:52:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:32,678 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:52:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:52:32,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:32,679 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1410127484] [2020-04-18 11:52:32,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:32,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:52:32,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1410127484] [2020-04-18 11:52:32,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:52:32,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:32,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:32,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:32,708 INFO L87 Difference]: Start difference. First operand 758 states and 2229 transitions. Second operand 3 states. [2020-04-18 11:52:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:32,743 INFO L93 Difference]: Finished difference Result 761 states and 2195 transitions. [2020-04-18 11:52:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:52:32,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 11:52:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:32,754 INFO L225 Difference]: With dead ends: 761 [2020-04-18 11:52:32,754 INFO L226 Difference]: Without dead ends: 635 [2020-04-18 11:52:32,756 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-04-18 11:52:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 617. [2020-04-18 11:52:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-04-18 11:52:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1829 transitions. [2020-04-18 11:52:32,803 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1829 transitions. Word has length 10 [2020-04-18 11:52:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:32,804 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 1829 transitions. [2020-04-18 11:52:32,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:52:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1829 transitions. [2020-04-18 11:52:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:52:32,811 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:32,811 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:32,813 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash -563128116, now seen corresponding path program 1 times [2020-04-18 11:52:32,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:32,816 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [556173856] [2020-04-18 11:52:32,816 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:32,817 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 11:52:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-04-18 11:52:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:52:32,819 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:32,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:32,820 INFO L82 PathProgramCache]: Analyzing trace with hash -563128116, now seen corresponding path program 2 times [2020-04-18 11:52:32,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:32,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913628986] [2020-04-18 11:52:32,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:32,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913628986] [2020-04-18 11:52:32,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:32,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:52:32,903 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:32,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:32,904 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 11:52:32,904 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:32,912 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:32,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:32,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:32,913 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-04-18 11:52:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:32,916 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-04-18 11:52:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-04-18 11:52:32,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:32,917 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [556173856] [2020-04-18 11:52:32,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:32,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:52:32,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [556173856] [2020-04-18 11:52:32,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:52:32,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:32,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:32,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:32,919 INFO L87 Difference]: Start difference. First operand 617 states and 1829 transitions. Second operand 3 states. [2020-04-18 11:52:32,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:32,944 INFO L93 Difference]: Finished difference Result 596 states and 1750 transitions. [2020-04-18 11:52:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:52:32,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 11:52:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:32,949 INFO L225 Difference]: With dead ends: 596 [2020-04-18 11:52:32,949 INFO L226 Difference]: Without dead ends: 464 [2020-04-18 11:52:32,950 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-04-18 11:52:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-04-18 11:52:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-04-18 11:52:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1401 transitions. [2020-04-18 11:52:32,965 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1401 transitions. Word has length 12 [2020-04-18 11:52:32,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:32,967 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 1401 transitions. [2020-04-18 11:52:32,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:52:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1401 transitions. [2020-04-18 11:52:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:52:32,969 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:32,969 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:32,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -561689065, now seen corresponding path program 1 times [2020-04-18 11:52:32,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:32,970 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1360001210] [2020-04-18 11:52:32,971 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:32,973 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 159 transitions. [2020-04-18 11:52:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 11:52:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:52:32,975 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:32,975 INFO L82 PathProgramCache]: Analyzing trace with hash -560651635, now seen corresponding path program 2 times [2020-04-18 11:52:32,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:32,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649527833] [2020-04-18 11:52:32,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:33,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649527833] [2020-04-18 11:52:33,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:33,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:33,053 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:33,055 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:33,060 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 88 transitions. [2020-04-18 11:52:33,060 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:33,065 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:33,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:33,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:33,066 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2020-04-18 11:52:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:33,074 INFO L93 Difference]: Finished difference Result 92 states and 160 transitions. [2020-04-18 11:52:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 160 transitions. [2020-04-18 11:52:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:52:33,075 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:52:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:33,075 INFO L82 PathProgramCache]: Analyzing trace with hash -561689065, now seen corresponding path program 3 times [2020-04-18 11:52:33,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:33,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309860362] [2020-04-18 11:52:33,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:33,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309860362] [2020-04-18 11:52:33,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:33,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:52:33,154 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:33,156 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:33,159 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-04-18 11:52:33,160 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:33,192 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:52:33,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:52:33,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:52:33,193 INFO L87 Difference]: Start difference. First operand 92 states and 160 transitions. Second operand 6 states. [2020-04-18 11:52:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:33,250 INFO L93 Difference]: Finished difference Result 152 states and 252 transitions. [2020-04-18 11:52:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 252 transitions. [2020-04-18 11:52:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:52:33,251 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:52:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:33,252 INFO L82 PathProgramCache]: Analyzing trace with hash -291491189, now seen corresponding path program 4 times [2020-04-18 11:52:33,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:33,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124712319] [2020-04-18 11:52:33,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:33,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124712319] [2020-04-18 11:52:33,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:33,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:33,324 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:33,326 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:33,331 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 89 transitions. [2020-04-18 11:52:33,331 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:33,347 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:52:33,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:33,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:52:33,347 INFO L87 Difference]: Start difference. First operand 152 states and 252 transitions. Second operand 3 states. [2020-04-18 11:52:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:33,355 INFO L93 Difference]: Finished difference Result 193 states and 310 transitions. [2020-04-18 11:52:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 310 transitions. [2020-04-18 11:52:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:52:33,356 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:52:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:33,356 INFO L82 PathProgramCache]: Analyzing trace with hash 962803841, now seen corresponding path program 5 times [2020-04-18 11:52:33,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:33,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932709459] [2020-04-18 11:52:33,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:33,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932709459] [2020-04-18 11:52:33,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:33,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:33,406 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:33,408 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:33,412 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 73 transitions. [2020-04-18 11:52:33,413 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:33,427 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:52:33,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:33,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:52:33,429 INFO L87 Difference]: Start difference. First operand 193 states and 310 transitions. Second operand 3 states. [2020-04-18 11:52:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:33,437 INFO L93 Difference]: Finished difference Result 220 states and 350 transitions. [2020-04-18 11:52:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 350 transitions. [2020-04-18 11:52:33,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:33,439 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1360001210] [2020-04-18 11:52:33,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:33,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:52:33,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1360001210] [2020-04-18 11:52:33,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 11:52:33,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:33,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:52:33,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:52:33,441 INFO L87 Difference]: Start difference. First operand 464 states and 1401 transitions. Second operand 9 states. [2020-04-18 11:52:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:33,917 INFO L93 Difference]: Finished difference Result 820 states and 2064 transitions. [2020-04-18 11:52:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:52:33,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-04-18 11:52:33,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:33,921 INFO L225 Difference]: With dead ends: 820 [2020-04-18 11:52:33,921 INFO L226 Difference]: Without dead ends: 420 [2020-04-18 11:52:33,922 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:52:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-04-18 11:52:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 294. [2020-04-18 11:52:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-04-18 11:52:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 683 transitions. [2020-04-18 11:52:33,933 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 683 transitions. Word has length 19 [2020-04-18 11:52:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:33,934 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 683 transitions. [2020-04-18 11:52:33,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 11:52:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 683 transitions. [2020-04-18 11:52:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:52:33,936 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:33,936 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:33,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:33,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:33,937 INFO L82 PathProgramCache]: Analyzing trace with hash -95552411, now seen corresponding path program 1 times [2020-04-18 11:52:33,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:33,937 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2093199337] [2020-04-18 11:52:33,938 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:33,942 INFO L259 McrAutomatonBuilder]: Finished intersection with 123 states and 222 transitions. [2020-04-18 11:52:33,943 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-04-18 11:52:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:52:33,944 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:33,944 INFO L82 PathProgramCache]: Analyzing trace with hash 755029947, now seen corresponding path program 2 times [2020-04-18 11:52:33,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:33,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147273630] [2020-04-18 11:52:33,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:33,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147273630] [2020-04-18 11:52:33,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:33,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:33,969 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:33,971 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:33,980 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 111 transitions. [2020-04-18 11:52:33,980 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:33,984 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:33,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:33,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:33,985 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-04-18 11:52:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:33,992 INFO L93 Difference]: Finished difference Result 125 states and 223 transitions. [2020-04-18 11:52:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 223 transitions. [2020-04-18 11:52:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:52:33,993 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:52:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash -95552411, now seen corresponding path program 3 times [2020-04-18 11:52:33,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:33,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060740677] [2020-04-18 11:52:33,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:34,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060740677] [2020-04-18 11:52:34,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:34,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:34,034 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:34,035 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:34,043 INFO L259 McrAutomatonBuilder]: Finished intersection with 65 states and 99 transitions. [2020-04-18 11:52:34,043 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:34,066 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 11:52:34,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:52:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:52:34,068 INFO L87 Difference]: Start difference. First operand 125 states and 223 transitions. Second operand 5 states. [2020-04-18 11:52:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:34,105 INFO L93 Difference]: Finished difference Result 193 states and 336 transitions. [2020-04-18 11:52:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 336 transitions. [2020-04-18 11:52:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:52:34,107 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:52:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash -577695805, now seen corresponding path program 4 times [2020-04-18 11:52:34,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:34,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735899124] [2020-04-18 11:52:34,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:34,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735899124] [2020-04-18 11:52:34,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:34,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:34,130 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:34,132 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:34,139 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 99 transitions. [2020-04-18 11:52:34,139 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:34,149 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:52:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:52:34,150 INFO L87 Difference]: Start difference. First operand 193 states and 336 transitions. Second operand 3 states. [2020-04-18 11:52:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:34,158 INFO L93 Difference]: Finished difference Result 225 states and 386 transitions. [2020-04-18 11:52:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 386 transitions. [2020-04-18 11:52:34,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:34,159 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2093199337] [2020-04-18 11:52:34,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:34,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:52:34,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2093199337] [2020-04-18 11:52:34,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:52:34,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:34,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:52:34,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:52:34,161 INFO L87 Difference]: Start difference. First operand 294 states and 683 transitions. Second operand 7 states. [2020-04-18 11:52:34,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:34,310 INFO L93 Difference]: Finished difference Result 340 states and 814 transitions. [2020-04-18 11:52:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 11:52:34,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-04-18 11:52:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:34,313 INFO L225 Difference]: With dead ends: 340 [2020-04-18 11:52:34,313 INFO L226 Difference]: Without dead ends: 276 [2020-04-18 11:52:34,313 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:52:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-04-18 11:52:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 218. [2020-04-18 11:52:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 11:52:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 498 transitions. [2020-04-18 11:52:34,322 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 498 transitions. Word has length 22 [2020-04-18 11:52:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:34,322 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 498 transitions. [2020-04-18 11:52:34,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:52:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 498 transitions. [2020-04-18 11:52:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:52:34,323 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:34,324 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:34,324 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:34,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1640844081, now seen corresponding path program 1 times [2020-04-18 11:52:34,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:34,325 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [424626248] [2020-04-18 11:52:34,326 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:34,330 INFO L259 McrAutomatonBuilder]: Finished intersection with 114 states and 204 transitions. [2020-04-18 11:52:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-04-18 11:52:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:52:34,332 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:34,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1951541931, now seen corresponding path program 2 times [2020-04-18 11:52:34,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:34,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933940523] [2020-04-18 11:52:34,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:34,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933940523] [2020-04-18 11:52:34,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:34,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:34,365 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:34,367 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:34,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 105 transitions. [2020-04-18 11:52:34,377 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:34,393 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:52:34,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:52:34,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:52:34,394 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-04-18 11:52:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:34,413 INFO L93 Difference]: Finished difference Result 185 states and 327 transitions. [2020-04-18 11:52:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 327 transitions. [2020-04-18 11:52:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:52:34,414 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:52:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:34,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1639806651, now seen corresponding path program 3 times [2020-04-18 11:52:34,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:34,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872838541] [2020-04-18 11:52:34,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:34,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872838541] [2020-04-18 11:52:34,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:34,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:34,448 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:34,449 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:34,458 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 105 transitions. [2020-04-18 11:52:34,459 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:34,464 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:34,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:34,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:52:34,465 INFO L87 Difference]: Start difference. First operand 185 states and 327 transitions. Second operand 3 states. [2020-04-18 11:52:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:34,471 INFO L93 Difference]: Finished difference Result 209 states and 365 transitions. [2020-04-18 11:52:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 365 transitions. [2020-04-18 11:52:34,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:34,472 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [424626248] [2020-04-18 11:52:34,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:34,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:52:34,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [424626248] [2020-04-18 11:52:34,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:52:34,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:34,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:52:34,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:52:34,474 INFO L87 Difference]: Start difference. First operand 218 states and 498 transitions. Second operand 5 states. [2020-04-18 11:52:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:34,518 INFO L93 Difference]: Finished difference Result 164 states and 403 transitions. [2020-04-18 11:52:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:52:34,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-04-18 11:52:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:34,519 INFO L225 Difference]: With dead ends: 164 [2020-04-18 11:52:34,519 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:52:34,520 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:52:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:52:34,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:52:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:52:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:52:34,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-04-18 11:52:34,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:34,521 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:52:34,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:52:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:52:34,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:34,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:52:34 BasicIcfg [2020-04-18 11:52:34,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:52:34,529 INFO L168 Benchmark]: Toolchain (without parser) took 5342.90 ms. Allocated memory was 145.2 MB in the beginning and 248.0 MB in the end (delta: 102.8 MB). Free memory was 100.1 MB in the beginning and 104.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 98.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:34,530 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 11:52:34,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 824.09 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 98.2 MB in the beginning and 161.5 MB in the end (delta: -63.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:34,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.63 ms. Allocated memory is still 202.9 MB. Free memory was 161.5 MB in the beginning and 159.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:34,542 INFO L168 Benchmark]: Boogie Preprocessor took 60.11 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 158.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:34,543 INFO L168 Benchmark]: RCFGBuilder took 463.73 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 134.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:34,543 INFO L168 Benchmark]: TraceAbstraction took 3882.86 ms. Allocated memory was 202.9 MB in the beginning and 248.0 MB in the end (delta: 45.1 MB). Free memory was 133.7 MB in the beginning and 104.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:34,549 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 824.09 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 98.2 MB in the beginning and 161.5 MB in the end (delta: -63.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 82.63 ms. Allocated memory is still 202.9 MB. Free memory was 161.5 MB in the beginning and 159.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.11 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 158.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.73 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 134.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3882.86 ms. Allocated memory was 202.9 MB in the beginning and 248.0 MB in the end (delta: 45.1 MB). Free memory was 133.7 MB in the beginning and 104.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 84 ProgramPointsBefore, 54 ProgramPointsAfterwards, 103 TransitionsBefore, 65 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1143 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11328 CheckedPairsTotal, 38 TotalNumberOfCompositions - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 482 SDtfs, 506 SDslu, 809 SDs, 0 SdLazy, 437 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=797occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 202 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...